struct wl_buffer* (*create_wayland_buffer_from_image)(
_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img);
+ /* optional */
EGLBoolean (*get_sync_values)(_EGLDisplay *display, _EGLSurface *surface,
EGLuint64KHR *ust, EGLuint64KHR *msc,
EGLuint64KHR *sbc);